Ant example source code file (SimpleP4OutputHandler.java)

This example Ant source code file (SimpleP4OutputHandler.java) is included in the DevDaily.com "Java Source Code Warehouse" project. The intent of this project is to help you "Learn Java by Example" ^TM.

Java - Ant tags/keywords

buildexception, buildexception, p4base, p4base, p4handleradapter, p4handleradapter, perforce, simplep4outputhandler, simplep4outputhandler

The SimpleP4OutputHandler.java source code

/*
 *  Licensed to the Apache Software Foundation (ASF) under one or more
 *  contributor license agreements.  See the NOTICE file distributed with
 *  this work for additional information regarding copyright ownership.
 *  The ASF licenses this file to You under the Apache License, Version 2.0
 *  (the "License"); you may not use this file except in compliance with
 *  the License.  You may obtain a copy of the License at
 *
 *      http://www.apache.org/licenses/LICENSE-2.0
 *
 *  Unless required by applicable law or agreed to in writing, software
 *  distributed under the License is distributed on an "AS IS" BASIS,
 *  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 *  See the License for the specific language governing permissions and
 *  limitations under the License.
 *
 */
/*
 * Portions of this software are based upon public domain software
 * originally written at the National Center for Supercomputing Applications,
 * University of Illinois, Urbana-Champaign.
 */

package org.apache.tools.ant.taskdefs.optional.perforce;

import org.apache.tools.ant.BuildException;
import org.apache.tools.ant.Project;
import org.apache.tools.ant.util.StringUtils;

/**
 * simple implementation of P4HandlerAdapter used by tasks which are not
 * actually processing the output from Perforce
 */
public class SimpleP4OutputHandler extends P4HandlerAdapter {

    // CheckStyle:VisibilityModifier OFF - bc
    P4Base parent;
    // CheckStyle:VisibilityModifier ON

    /**
     * simple constructor
     * @param parent  a P4Base instance
     */
    public SimpleP4OutputHandler(P4Base parent) {
        this.parent = parent;
    }

    /**
     * process one line of stderr/stdout
     * if error conditions are detected, then setters are called on the
     * parent
     * @param line line of output
     * @throws BuildException does not throw exceptions any more
     */
    public void process(String line) throws BuildException {
        if (parent.util.match("/^exit/", line)) {
            return;
        }

        //Throw exception on errors (except up-to-date)
        //
        //When a server is down, the code expects :
        //Perforce client error:
        //Connect to server failed; check $P4PORT.
        //TCP connect to localhost:1666 failed.
        //connect: localhost:1666: Connection refused
        //Some forms producing commands (p4 -s change -o) do tag the output
        //others don't.....
        //Others mark errors as info, for example edit a file
        //which is already open for edit.....
        //Just look for error: - catches most things....

        if (parent.util.match("/^error:/", line)
            || parent.util.match("/^Perforce client error:/", line)) {
            //when running labelsync, if view elements are in sync,
            //Perforce produces a line of output
            //looking like this one :
            //error: //depot/file2 - label in sync.
            if (!parent.util.match("/label in sync/", line)
                && !parent.util.match("/up-to-date/", line)) {
                parent.setInError(true);
            } else {
                //sync says "error:" when a file is up-to-date
                line = parent.util.substitute("s/^[^:]*: //", line);
            }
        } else if (parent.util.match("/^info.*?:/", line)) {
            //sometimes there's "info1:
            line = parent.util.substitute("s/^[^:]*: //", line);
        }
        parent.log(line, parent.getInError() ? Project.MSG_ERR : Project.MSG_INFO);

        if (parent.getInError()) {
            parent.setErrorMessage(parent.getErrorMessage() + line + StringUtils.LINE_SEP);
        }
    }
}